Machine for slotting lock nuts



March 24, 1925. 1,530,656

7 c. EMERY r MACHINE FOR SLOTTING LOCK NUTS Filed April 29.192; 6 Sheets-Sheet 1 Amuu ll lummmmmf l arrow Q March 24. 1925. 1,530,656

: I. c. EMERY M ACHINE FOR SLOT'I'ING LOQK NUTS 6 Sheets-Shut 2 March 24, 1925. 1,530,656

. l. c. EMERY MACHINE FOR SLOT-TING LOCK UT-'5 Filed A 'rn 29. 1922' s Sheets-Sheet s Marh 24. 1925. v 9 1,530,655

I. c. EMERY r MAbHINE won snowman LOCK? mi'rs Filed April 29. 1922 s Sheets-Sheet 4' CHINE FOR SLO'ITING LOCK NUTS Filed April -29.- 1922 6 Sheets-Sheet 5 1. c. EMERY .NACl-IiNE FOR SETTING LOOK NUTS run Filed April 29'. 1922 6-She tg-Sheat e m 1 .3 a w a x g w m u mu 3 a .II I L m :15. v N$ QM A Patented Mar. 24, 1925 ting Lock Nuts; and .I do hereby declaremachine made UNITED STATES PATENT. OFFICE.

I; G. EMEBY, OI BALTIMORE, MARYLAND, ASSIGNOB TO CHAPMAN SELF LOOKING NUT COMPANY, TRUSTEES, OF BALTIMORE, MARYLAND.

macrmm roa sLor'rme Loon-mire.

Application filed April 29, 1922. Serial No. 557,274.

To all it may concern:

Be it known that I, I. C. EMERY, a citizen of the United States, residing at Baltimore,

in the county of Baltimore City and State of Maryland, have invented certam new and useful Improvements in Machines for Slotthe following to be a full, clear, and exact description of the invention, such as Wlll enable others skilled in the art t0.which it appertains to make and use the same.

This invention relates to a means for making lock nuts and has for its object to provide an automatic machine which will be simple in construction, certain in operatlon, and less costly to produce than those heretofore proposed.

With these and. other objects in View, the invention consists in the novel parts and combinations of parts more fully hereinafter disclosed and particularly pointed out in the claims.

Referring to the accompanying drawings forming a part of this specification, in which like numerals designate like parts in all the views:

Figure 1 is a side elevational view of a in accordance with this invention;

Figure 2 is a View similar to Figure 1, but showing the opposite side of the machine;

- Figure 3 is a view similar to Figure 1, but showing the parts in another position;

Figures 4 and 4 constitute a plan view of theparts shown in Figures 1 and 2;

.Figli're 5 is a side elevation of the nut made by the machine after its slit has been sawed, but before said slit has been partially closed;

Figure 6 is a view of the nut after its slit has been partially closed;

Figure 7 is a sectional view of the nuts shown in Figures 5 and'6;

Figure 8 is a detail sectional view of a portion of the slit closing mechanism; and

Figure 9 is an irregular sectional view of the mechanism, taken approximately on the line 9-9 of Figure 1, looking in the direction of the arrows, certain parts being shown in elevation and certain parts being. omitted for the sake of clearness.

1 indicatesany suitable base, from which rises a-web or frame 2, having the strengthening' ribs 3, and the top flanged portions 4. 0n the supporting frame work thus provided, in suitable bearings is journalled the power shaft 6, carrying the power pulley 7 and the small gear 8, meshing with the larger ear 9 mounted on the shaft '10 car- .r. ing tie saw 11, all as will clear from igures 1, 2 and 3. lso mounted in suitable bearings on the frame work is a second power shaft 12, carrying a second power pulley 13, and a worm 14, meshing with a worm gear 15, mounted on a shaft 16, carrying a cam 17, having a cut away portion 18, as plainly shown in Fi res 1 and 3.

ivoted to the frame,-- as at 19, isa Y- shaped member 20, provided with the roller 21 adapted to rideover the surface 22 of the cam'17, and 'to enter said cut away portion 18, and as will be clear from the drawings, during these movements said Y-shaped member 20 will be swung on its pivot 19 from the position shown in Figure 3 to that shown in Figure 1. Pivoted to the member 20, as at 23, is a second Y-shapedmember 24 provided with an end 25 through which passes the adjustable rod 26, surrounded by the spring 27, as illustrated. Pivoted on the shaft 30, is the bent lever 31, one end 32 of which lies in the path of the roller 33 car ried by the cam 17 and the other end 34 of which is adapted to contact with the end 36 of the second Y-shaped member 24.

The first Y-shaped member 20 is provided near the pivot 23 with a nut holding jaw 38, and co-acting with the latter is a complemental nut holding jaw 39 carried by said second Y-shaped member 24. Rising from theframe in a vertical plane near that of the saw 11, is a feed chute 40 .adapted to feed nuts 41 by gravity down to the bottom 42 of said chute formed by the frame member 43 as best illustrated in Figure 9. Mounted on the worm gear 15 is a cam 45 which actuates a roller 46 carried by one end 47 of a lever 48 ivoted at 49, and whose other end 50 is atta'c ed as at 51 to the member .52, to which the stout spring 53 is joined as at 54. The other end of said sprinilfili encircles the plunger member 55, w 'ch passes through the projection 56 of the frame member It thus happens that as the worm gear 15 revolves the cam 45 actuates the roller 46 and lever 48 to reciprocate .the plunger 55 through the medium of the spring 53, and

the reciprocation of said plunger 55 pushes the bottom nuts 41 from the chute 40, into nut 56, and thus is the slot 57, see Figure 5, placed in said nut.

As the cam 17 continues to rotate, the cut away portion 18 comes under the roller 21, and the Y'-shaped member is swung on its pivot 19 i'rom the position shown in Figure 3 to theposition shown in Figure 1, under the,

influence of the weight which is attached to the extreme end 61 of said Y-shaped member 20 by means of the cable or other connection 62, as will be readily understood.

As the slotted nut 56 returns to the positio shown in Figure 1, it comes opposite the delivery chute 63,. and falls by gravity down said chute until it strikes the arm .64, which intersects said chute. Said arm 64. is rigid with the bent lever 65 pivoted at 66,'and provided with the angular portion 67, provided with the weighted end 68- to which is attached the yoke 69. To the yoke 69 is secured one end of theflat steel band 70, which passes over the hub-71 of of the cam 17, and has its other end secured to the yoke 72 whichis attached to the extreme end, as at 73 to the Y-shaped member 20; as illustrated.

I It thus results that as said Y-shaped mem ber 20 is moved from the position shown in Figure 1 to the position shown in-- Figure 3 said flat steel band is straightened out, and the lever 65 is swung on its pivot 66, to the endthat its bent portion 64 is retracted from the said chute 63. But while the extreme corner 74 of the bent portion 64 is passing out of said chute 63, said corner serves to lift the slotted nut 56 from the dotted line position illustrated in Figure 3, until the center of said nut occupi'es a position'above the.center 75 of a' compressin mechanism to be described.

It shoul be stated, however, thatthe chute 63 is cut away in order to permit the corner .74 of said member 64 to lift the nut into said last mentioned position, all as will be clear from Fi ures 1 and 8. Just as the slotted nut 56' 1s brouglit into the position illustrated in Figure 8, the parts are so timed that the bending of the parts 77 of the nut 56 toward the part 78 of said nut (see Figure 6) will take place in the manner now to be disclosed.

That is, there is mounted v in that portion of the framework 80, see Figure 9. the screw 4,

threaded end 81, of acom pression member 82, which has keyed thereto as at 830m end of an oscillating member 84, see Figure 1. The other end of said oscillating member 84 is pivoted at 85 to the member 86, through which slides the member 87, pivoted at 88 to the member 89, which is pivoted at 90 to the cam 17, all as will be clear from Figures 1 and 9. The members 86 and 89 are surrounded by the coil spring 91, and as the cam 17 rotates it is evident that the parts are so proportioned and disposed that the said member. 84 will oscillate to and fro around the "point 75 as a center, with the result that the compressing member 82 will be moved first toward the said reciprocating compressing member '82 is the adjustable stationary 'compressing member 92, and it isevident that the portion 77 of the nut 56' will bebent from its position parallel to the member 78, as seen in Figure 5, to its position inclined to said portion 78, as illustrated in Figure '6. The partsare so timed that as this compressing action is completed, the edge 74'0f the bent portion ,64 will have left the nut so that-the said nut will fall back under the action of gravity into the delivery chute 63, and will traverse said chute until' its extreme end has been reached, and thus will be carried awa' from the other mechanism'into any suita le re- 40, with the lower nut resting on. the bottom 42 of said chute, as. seen'in Figure 9. Power is imparted through the pu ley 13 to the power shaft 12, which operates the worm.

gear 15, and cam 17. The rotation of the cam 17 moves the end 61 of the Y-shaped member 20, up and down, through the,

medium of the roller 21 and thus oscillates said Y-shaped member around the ivot 19 as a center. Said Y-shaped mem er has pivoted thereto as at 23 the Y-shaped member 24, which carries a holding jaw 39, which latter co-acts with the holding jaw 38 of the member 20, and thus do the two jaws grip spring 2 associated -with the member 24 governs the grip ing power of the jaws 38 and 39, and sai jaws being in the plane of the saw 11, when they oscillated around the pivot 19 they carry the nut 56 across the cutting edge of the saw 11, and thus is.

a slit 57 placed in the nut. [In order that the sawmay reach beyond the center of the a nut 56 between them. The

-nuts ,-said jaws 38 and 39 are. provided. with a sht or slot 100, see Figu re 9. The saw 11 is operated by the following means:

Power is imparted to the pulley 7, and

shaft 6,- whereupon the small gear 8 turns the large gear 9 and shaft 10 on which the saw is mounted. The unslotted nuts 41 are moved from their position shown in Flgure 9 to the 10 4 and 9 to the position of the slotted nut 56,

but not over the delivery chute 63. When in the position 56, jaws 38 and 39 are separated by reason ofthe fact that the roller 33 has operated the lever 31 to cause its end 34 to' act upon the projection 36 "of the member24, andthus to raise the jaw 39 away from the jaw 38. After said roller 33 has passed the end 32 of the lever 31 however, the spring 27 will swing the jaw 39- around its pivot 23 and thus will said jaw 39 close down upon-the nut held by the jaw 38, and a continued rotation of the cam 17 will swing the member 20 including the jaws 38 and 39, as well as the nut 56, across the edge of the saw 11, all as above disclosed.

On the other hand, when' the cam 17 reaches such a position that the roller 21 again occupies the cut away portion 18, the jaws 38 and 39 will occupy such a position as to cause the nut 56 to be in line with,

. "but to one side of the delivery chute 63.

Now, when the roller 33, through the medium of the lever 31 and its end 34, again lifts said jaw 39 to release its nut, the plunger 55 willv again act to push another nut 41 from the bottom 42 of the chute into a position between said jaws, and this third nut will ush'the second nut out from the position tween said jaws toward the left, as

- seen in Figure 9, and this said second nut will push toward the left the first nut 56",

not shown in Fi lire. 9, but illustrated in Figure 4, and this said first nut will fall into the mouth of the delivery chute, when it is pushed again by the plunger 55. In

other words, there are always three nuts in operated line as seen in Figure 4, ready to be The sprmg 53 serves a double function. It serves to cushion the action of the parts should they become jammed and thus pre-. vent the breaking of the machine, and it.

also serves to return the plunger 55 after it has pushed a nut into the position between the jaws.

It sometimes happens that nuts differ ent sizes need to theslotted and also it sometimes happens that the depth of the slots 57 need to be varied. In order to make thismachine accommodate itself to these various requirements, the shafts 6 and 10, Figure 1, are mounted upon a member 102, which is slidably connected with that portion of the frame 4 which supports it. That is, said nember 102 is provided with the spline 103 which fits into the framework and with the 24 provide the gripping.

jaws 38 and 39 to grip the nuts to be slotted, that the plunger mechanism 55and its associated partsprovide means to feed the nuts to the jaws 38 and 39, that the cam 17 and its associated parts provide means to move the gripped nuts acrossthe path of the saw 11, or other equivalent slotting means; that the screw threaded member 82 and its associated parts provide means to permanently bend the part 77 of the slotted nut toward the part 78 thereof, to the end that the screw threads in the part 77 are displaced relative to the screw threads in the parts 78 and that therefore when a slotted nut suoh'as 56' is placed on a bolt the threads of the bolt will tend to move the part 77 of the slotted nut-back into its position parallel to the part 78, as is illustrated in Figure 5. This tendency on the part of the screw threads of" the bolt will be resisted by the natural spring tension of the metal, andtherefore will the part 77 bind tightly against the threads of the bolt and thus tend to lock the nut in place.

It, is obvious that those skilled in the vention, and therefore I do not wish to be limited to the above disclosure except as may be required by theclaims."

What'is claimed is:

1. In a lock nut slotting machine, the combination of a member directly: pivoted to the frame of said machine and provided with-a gripping jaw; another member provided with a gripping, jaw pivoted to said first named member; 'means 'to cause said jaws to grip a nut to be slotted; and means to slot the gripped nut.

2. In a lock nut slotting machine, the combination of a member dlrectly pivoted to the frame of said machine and -.pro-

the nut to said plunger; and means to cause vided with a gripping jaw; another member provided with a gripping jaw pivoted to said first named member; reciprocating means to feed a nut to said jaws; means to cause said jaws to grip the fed nut; and means to slot the gripped nut.

3. In a lock nut slotting machine the combination of a cutter; a. pivoted member provided with a gripping jaw; another member provided with a gripping jaw pivoted to* said first named member; automatic reciprocating means to feed a nut to said jaws; means to cause said jaws'to grip the fed nut; and means comprising a rotating cam to move the gripped nut toward said cutter.

4. In a lock nut slotting machine the combination of a cutter; means to grip the nut to be slotted: means to vfeed said nut to said gripping means; means to cause the gripped nut to cross the cutting edge of said cutter; means to release the slotted nutfro'm said gripping means; means to deform the slot produced; and means to position the slotted nut with respect to said deforming means.

5. In a lock nut slotting machine the combination-of a cutter; means to grip the nut to be slotted; means to feed said nut to said gripping means; means -to cause the gripped nut to cross the cutting edge of said cutter; means comprising a lever to releasethe'slotted nut from said gripping means; means to deform the slot produced; and ineans to position the slotted nut with respect to said deforming means.

. 6p In a lock nut slotting machine the combination of a cutter; means to grip the nut tosbe slotted; means to feed said nut to said gripping means; means to cause the gripped nut ,to cross the cutting edge of said cutter; a roller'carried by said last named. means; means comprising a lever actuatedby said roller to. release the slotted nut from said gripping means; means to deform the slot produced; and means to position the slotted nut with respect to said deforming means.

7. In a lock nut slotting machine the combination of a cutter; means to grip the nut to be slotted; means to feed said nut to said gripping means; means to cause the gripped nut to cross the cutting edge of said cutter; means to release theslotted nut from said grippingmeans; meansto deform the slot produced; means comprising a lever to position the slotted nutwith respect 'to said deforming means; and means associated with said gripping means to actuate said positioning means 2 18'.'- In a nut slotting the combination'of a slot cutter; a pair of holding jaws to grip'the nut to be slotted: apivoted memher carrying one .of said jaws;"a -plu nger tqfeed the nut to said jaws; means to feed said pivoted member to move the gripped nut across the slotting edge of grid cutter,

substantially as described. l.

9. In a nut slotting machine the combi nation of a saw; a-pair of gripping jaws;

' a plunger; means to feed nuts in succession jaws to move the gripped nuts across the cutting edge of said saw and to retract said nuts after the slotting operation; and means to cause said jaws to release the retracted nuts, substantially as described.

10. In a nut slotting machine, the com bination of a cutter; means to grip the nut to be slotted; means to cause said gripping fmeans to subject said nut to the slotting action of said cutter; and means to bend one portion of the slotted nut toward the other, substantially as described.

11 In a nut slotting machine the co1nbination of a slot cutter; avmovable jaw to grip the nut to be slotted; means to feed said nut to said jaw; means to cause the gripped nut to cross the cutting edge of said cutter; and means to permanently bend one portion of the slotted nut toward the other, substantially as described.-

'12. In'a nut slotting machine,-the combination of a slot cutter; a pair of holding. jaws to grip thenut to be slotted; a pivoted member carrying one of said jaws; means to cause said pivoted member to move the gripped nut across the slotting edge of said cutter; and Irieans to permanently deform said nut by bending one threaded portion toward the other, substantially as described.

13. In a nut slotting machine the combination of a saw; a pair of gripping jaws; a plunger; means to feed nuts in succession to said plunger; means to cause said plunger to successively feed nuts to said jaws; means to successively cause said jaws to grip the fed nuts; means to successively cause said jaws to move the gripped nuts across the cutting edge of said saw and to retract said nuts after the slotting operation; means to cause said jaws'to release the retracted nuts;

and means to permanently deflect one portion of the slotted nut toward the other, substantially as described:

14. In a nut slotting machine the com- .bination of a saw to slot the nuts; a pair of gripping jaws; a plunger for feeding the nuts to said jaws; a cam for causing the jaws to subject the nuts to the slottlngaction of said saw; means'associated with said cam forcausing said jaws to release the nuts of gripping nuts to the slotting action of said saw;

means comprising a worm and worm gear for operating said cam; means comprising a pivoted member associated with said cam for causing said jaws to release the nuts after the slotting action is completed; means a for permanently deflecting one portion of the slotted nut toward the other; and means associated with said cam for actuating said deflecting means, substantially as described.

16. In a nut slotting machine the comb bination of a saw to slot the nuts; a pair jaws; a plunger for feeding the j aws to subject the nuts to the slotting action of said saw; means associated with said cam for causing said j aws to release' the nuts after the slotting action is completed; means comprising an oscillating screw threaded member for permanently deflecting one portion of the slotted nut toward the other; and b means comprising an oscillating lever like member rigid with said screw threaded member and associated with said cam for actuating said deflecting means, substantiallyv as described.

17. In a nut slotting machine the 'com-' grip the nuts; means bination of means to to feed the nuts to the gripping means;

means to move the gripped nuts to the slot- I combinations of means ting means; and means to permanently deform the slot produced, substantially as described.

18. Ina lock nut slotting machine the combinations of means to rovide a nut with a slot; a movable slot eforming means; means to feed said slotted nut to said slot deforming means; position the center line of movement means.

19. In a lock nut of the fed nut out of the of said slot deforming slotting machine the comprising pivoted grippers and a cutter to form a slot in a nut; a movable slot deforming means'comprising a screw actuated compressing memer; means to feed sa1d slotted nut to said slot deforming means; and movable means ;'to position the center of the fed nut out of nuts to sa1d aws; a cam for causing the 20., In a lock nut sl0tting machine the combinations of means comprising pivoted grippers and a cutter to formga slot in a nut; a movable slot deforming means comprising a screw actuated compressing memer; means to feed said slotted nut to said slot deforming means; movable means comprising a pivoted lever to position the center of the fed nut out of the line of movement of said slot deforming means; and connec tions between said grippers and said lever to actuate the latter.

In testimony whereof I affix my signature.

I. c. EMERY.

and movable means to 

